Vacuum cleaner



FIG. 1 is a perspective view of a vacuum cleaner showing my new design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a left side elevation view thereof. 

The ornamental design for a vacuum cleaner, as shown and described. 